Living in the Matrix: Recent Advances in Understanding Quantum Spacetime ▸ Clifford V Johnson (UCSB)

Ғылым және технология

The quest to understand the quantum physics underlying all phenomena continues, and the origin and nature of gravity and spacetime itself is an exciting frontier. We must come to grips with their quantum description if we are to understand black holes, and the Big Bang that gave rise to the universe and ultimately to us. Recent progress has established the remarkable fact that models of quantum gravity needed to understand certain key aspects of black holes are captured by “random matrix” descriptions, in which spacetime emerges from more fundamental “matrix” building blocks. This talk will unpack some of these ideas and address the question of whether these results could one day lead us to say we’re living in The Matrix.
ABOUT THE SPEAKER:
Clifford V. Johnson’s work in science ranges from research and teaching to public engagement where he strives to put science back into the general culture. He helps artists, writers, and filmmakers incorporate science into their work, and contributes to many TV documentaries such as Nova and The Universe. He has been science advisor for many shows and movies, including Nat Geo's Genius (featuring Einstein), Marvel's Agent Carter (S2), Paper Girls, Palm Springs, Thor: Ragnarok, Avengers: Infinity War, Avengers: Endgame, and more. He was science advisor for Blake Crouch's bestselling Sci-Fi/Thriller novel Dark Matter, coming to Apple TV in the Spring. Johnson is also the author/illustrator of a non-fiction graphic novel featuring science called The Dialogues: Conversations about the Nature of the Universe (MIT Press).
__________________________________
The Kavli Institute for Theoretical Physics presents The KITP Public Lecture Series sponsored by Friends of KITP
KITP Public Lectures connect you with people and research that is transforming our understanding of the universe. This popular series of 3-4 public lectures each year takes advantage of the presence of the many distinguished scientists who visit KITP to collaborate on the most fascinating and challenging questions in their fields.
Become a Friend of KITP: www.kitp.ucsb.edu/friends
Subscribe to receive future Public Lecture invites: www.kitp.ucsb.edu/subscribe
Follow @KITP_UCSB for updates on Twitter: / kitp_ucsb
__________________________________
The position of the KITP is that ownership and copyright of all online material -- slides, text, audio, video, and podcasts -- belongs to the author. KITP is providing dissemination for these materials but does not claim ownership. Any person citing these materials for scholarly purposes should provide an appropriate scholarly reference.

Пікірлер: 7

  • @thedouglasw.lippchannel5546
    @thedouglasw.lippchannel554629 күн бұрын

    How about CIG Theory and the MTS Equation? Has that any impact on the Matrix?

  • @vanikaghajanyan7760
    @vanikaghajanyan7760Ай бұрын

    56:26 {"Giving the interval ds the size of time, we will denote it by dт: in this case, the constant k will have the dimension length divided by mass and in CGS units will be equal to 1,87*10^-27", Friedmann, "On the curvature of space". [The ds, which is assumed to have the dimension of time, we denote by dт; then the constant k has the dimension Length Mass and in CGS-units is equal to 1, 87.10^ ± 27. See Laue, Die Relativitatstheorie, Bd. II, S. 185. Braunschweig 1921.] It follows from this: μ(0)ε(0)Gi=1, which means that Gi=с^2 where i is inertial constant, i=1,346*10^28[g/cm]; or k°=1/i=7,429*10^-29[cm/g]: k(Friedmann)/k°=8π; where k°=r(pl)/m(pl).} Apparently GR was an overlooked QG: this assumption follows from the Schwarzschild solution and can be tested experimentally in the laboratory at the moment. 1.The gravitational radius (or Schwarzschild radius) is a characteristic radius defined for any physical body with mass: r(G)=2GM/c^2 Consequently: 2E(0)/r(G)=F(pl)=c^4/G=ε(pl)/r(pl): with indicating the mutual quantization of the mass (energy) and space-time: m(0)/m(pl)=r(G)/2r(pl)=n,where n-total number of quanta of the system; the tension vector flux: n=[(1/4π)(Gћc)^-½]gS ( const for all orbits of the system: n=0,1,2,3....). Moreover, the parameter r(0)=r(G)-r(pl)=(2n-1)r(pl), defining the interval of the formation of the system, at n=0, when r=r(G)=0 (for example, the state of the "universe" before the Big Bang) turns out to be a quite definite quantity: r(0)=-r(pl). In the area [(-rpl) - 0 - (+rpl)] there is an implementation of external forces, "distance": (-rpl)+(+rpl)=0 (≠2rpl). 2. On the Kruskal diagram of the hyperbole r=0 corresponds to the true Schwarzschild feature, the features V and VI are not even covered by the global (R, T)- space-time and correspond to the "absolute" vacuum; then the singular areas above and below the hyperbolas r=0 can be formally treated as the energy source (external forces). That is, the frightening "true singularity" is actually a superconducting heterotrophic "window" between the proto-universe (the source) and physical bodies*. 3. As a fundamental theory, GR has the ability with just one parameter: r(G)/r=q to predict, explain new physical effects, and amend already known ones. Photon frequency shift in gravitational field Δw/w(0)=q; the angle of deflection of a photon from a rectilinear propagation path =2q, the Newtonian orbit of the planet shifts forward in its plane: during one revolution, a certain point of the orbit is shifted by an angle =3πq, for a circular orbit (eccentricity е=0); in the case of an elliptical orbit - for example, for perihelion displacement, the last expression must be divided by (1-e^2). 4. The parameter q is not necessarily a measure of the deviation of the metric from the pseudo-Euclidean one, since in the quantized phase space q=πr/L, where L is the length of the phase path and πr^2=r(G)L. GR/QG predicts a new physical effect: w/w(pl)=q; expression for gravitational radiation from a test body. This is amenable to physical examination in laboratory conditions at present. ----------------------- *) - From this, generally, from Einstein's equations, where the constant c^4/G=F(pl), one can obtain a quantum expression (as vibration field) for the gravitational potential: ф(G)=(-1/2)[Għ/с]^½ (w)=-[h/4πm(pl)]w. Final formula:ф(G)=-[w/w(pl)]c^2/2, where ф(G) - is Newtonian gravitational potential, r(n')=nλ/π=(n+n')2r(pl)l , the corresponding orbital radius, w - the frequency of the quanta of the gravitational field (space-time); - obviously, the quanta of the field are themselves quantized: λ=(1+n'/n)λ(pl) = 2πc/w, where n'/n=M/2∆m: system gravity unpacking ratio, n'- the orbit number (n'=0,1,2,3…). a.The constant c^2 / 2w(pl) in the final formula is a quantum of the inertial flow Ф(i) = (½)S(pl)w(pl) = h/4πm(pl) (magnetic flux is quantized: = h/2e, Josephson’s const; and the mechanical and magnetic moments are proportional). b. Obviously, on the horizon [r=r(rG), n'=0] the "door" is closed, however, the quanta [λ=λ(pl)] can go out singly and form the first and all subsequent half-orbits (n'=1,2, 3 ...) during the time t(0)=r/c=2nт, where т=1/w, т=((1+n'/n)т(pl), spending part of their energy on it each time. And it is this mechanism that provides the step-by-step formation of a variable gravitational field: variably accelerated expansion of spacetime as a phase space: |a|=g=πc^2/L, where L[=πr^2/r(G)] is the length of the phase trajectory (of course, the quanta coming through the "window" are also rhythmically restored). c.The phase velocity of evolution v'/π= r(pl)w/π; m(0)=(c/2G)rv', where v'=v^2/c. The angular momentum: L(p)=|pr|=n^2ћ [const for all orbits of the system; at n=1: L(p)=ћ] and moment of power: M(F)=dL(p)/dt(0)=nћw/2=-E(G)=E*, where t(0)=r/c, E*- energy of self-action. The gravitational field is characterized by a spontaneous flow: J*=(v'/π )(1/4π) g^2/G, where v'/π- phase velocity of field evolution. d. Entropy (here: a measure of diversity/variety, not ugliness/disorder) of the system: S=πε(pl)r(t)=(n+n')k, where k is the Boltzmann constant. Obviously, on the horizon entropy=min and with fundamental irreversibility, information is preserved (+ evolves, accumulates). e. Accordingly, m=m(pl)/(1+n'/n), where m=ħw/c^2, is the quantum of the full mass: M=n'm [

  • @jaclyndomingue7305

    @jaclyndomingue7305

    Ай бұрын

    holy shit

  • @sunnyhollow8141

    @sunnyhollow8141

    28 күн бұрын

    I agree

  • @LaboriousCretin
    @LaboriousCretin29 күн бұрын

    Q. Have you thought about electron degeneracy from neutron stars as a quantum boundary for black holes? Or a unique neutrino superfluid? Or degenerate matter to plankian scale and photosphere quantum mixxed state? It also gets to particle production from quantum foam and gravitational waves and energy density regimes.

  • @user-fl7oc5vv6g
    @user-fl7oc5vv6g27 күн бұрын

    BIG ERROR in measuring the Universe. Let's do the Michelson-Morley experiment on a school bus and determine the speed in a straight line - this is exactly the experiment Einstein dreamed of. Perhaps we will see the postulates: “Light is an ordered vibration of gravitational quanta, and Dominant gravitational fields control the speed of light in a vacuum.” There is a proposal for the joint invention of a HYBRID gyroscope from non-circular, two coils with optical fiber, where the light in each arm travels 18,000 meters, without exceeding the parameters of 0.4/0.4/0.4 meters and mass - 4 kg. .....

  • @alexdee781
    @alexdee7816 күн бұрын

    this guy is so bad

Келесі